All Power Posts

Subwoofers can make the difference between good and great business music systems. Light background or foreground music might not require subwoofers; however, even in systems where the bass doesn’t need to be a dominant factor, having clean, full low frequencies can make a big difference in the customers’ enjoyment of the music. The number of subwoofers to use, where to position them, how to set the taps (on 70-volt/100-volt subs) and how loud to run them vary depending on the…
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I’ve been using rechargeable batteries in live production settings for more than eight years now, and writing about it for almost that long. In that time, I’ve come across three camps in the rechargeable battery debate. The first group has used them for years, loves them and wouldn’t consider going back to alkaline batteries. The second group has never used them, though most have heard the horror stories and are leery. The third group has tried them and had bad…
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Altinex has announced the availability of the SP3502SC, a new interconnect plate for the company’s PNP400 (Pop ‘N Plug) and TBL100 (Table Buddy) Series interconnect systems. The SP3502 SC provides a combination of audio, video, network access, and power/charging facilities to enable business and education professionals to quickly and conveniently connect their laptops, tablets, and other devices into a boardroom or classroom in order to make the necessary connections for the sharing of materials or to make presentations. Offering a…
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In the dawning days of audio, transformers played a vital role in the functionality of first-generation all-tube based electronic circuitry. It was circa 1920 and radio broadcasts for the general populace had just begun, generating a rapid rise in the demand for broadcast audio systems, all of which needed transformers to function. Later, as equipment for live sound reinforcement began to emerge, transformers again proved indispensible as the only means of matching microphone impedances to vacuum tube preamplifiers. Transformers were…
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This article is provided by Gary Zandstra.com. “How do I get the biggest change in my sound quality for the smallest investment?” I’m often asked this question from cash-strapped churches that need a sound system upgrade but don’t have the funds to accomplish it all at once. If it’s the sound operator who approaches me first, his goal is usually to get a new mixing board. If it’s the worship leader, he’s usually focused on microphones and/or monitors. Then…
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Harman’s AKG has introduced the new APS4 antenna power splitter, which can be operated in an extended frequency range of 470 to 952 MHz for maximum flexibility and is available for DMS700, WMS4500, WMS470 and WMS420 receivers. The APS4 offers multiple technical improvements, including a flat frequency response. It is a wide-band UHF active antenna power splitter that can feed up to four receivers with the RF signal coming from one pair of antennas. It also supplied power to all…
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I go to a lot of concerts. Most of the time, I arrive at sound check to spend some time talking to the techs and engineers about new gear or problems that need fixing. This is also a source of new product development. Then, if time permits, we usually try to go out for a quick dinner before heading back to the venue for the show. My favorite position to hear the band is at front of house. This where…
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Vlad Konopelko has joined Middle Atlantic Products as product manager, power, where he is tasked with driving the strategy of a rapidly growing category for the company, working with the product development team to bring to market power solutions that help integrators install reliable systems. Konopelko has varied experience with enclosure and power product line management for Schroff and APC, respectively. Specifically, he will be focusing on power distribution, protection, backup and system monitoring, and control products across a variety…
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It seems nothing is ever easy. However simple they might appear, making fixed resistive attenuators (I’ll call them pads in this article) requires doing some math if you want them to come out right. Sure, you could simply hook up some resistors and see what you get, but that’s not audio engineering. The reasons for doing the math are simple: to make both the pad and the equipment you are using with the pad work properly. You will see why…
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QSC has unveiled the GXD Series of amplifiers, providing power, performance and reliability coupled with the convenience of onboard digital signal processing. Housed in a 2U rack-mount configuration, GXD Series amplifiers are class-D devices for high power output in a light weight chassis design. They offer extensive loudspeaker processing capability to help users optimize and get the most from their loudspeaker systems. DSP includes high- and low-pass filters (24 dB LR), 4-band parametric equalizer, signal alignment delay, and RMS/peak loudspeaker…
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